/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:31:56,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:31:56,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:31:56,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:31:56,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:31:56,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:31:56,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:31:56,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:31:56,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:31:56,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:31:56,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:31:56,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:31:56,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:31:56,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:31:56,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:31:56,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:31:56,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:31:56,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:31:56,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:31:56,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:31:56,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:31:56,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:31:56,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:31:56,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:31:56,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:31:56,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:31:56,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:31:56,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:31:56,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:31:56,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:31:56,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:31:56,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:31:56,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:31:56,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:31:56,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:31:56,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:31:56,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:31:56,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:31:56,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:31:56,245 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:31:56,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:31:56,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:31:56,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:31:56,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:31:56,246 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:31:56,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:31:56,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:31:56,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:31:56,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:31:56,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:31:56,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:31:56,247 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:31:56,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:31:56,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:31:56,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:31:56,553 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:31:56,554 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:31:56,554 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730b.c [2020-08-22 18:31:56,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ead4c3f5a/ae01084363624c1782d5585374493a28/FLAG7a94ff9e7 [2020-08-22 18:31:57,033 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:31:57,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0730b.c [2020-08-22 18:31:57,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ead4c3f5a/ae01084363624c1782d5585374493a28/FLAG7a94ff9e7 [2020-08-22 18:31:57,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ead4c3f5a/ae01084363624c1782d5585374493a28 [2020-08-22 18:31:57,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:31:57,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:31:57,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:57,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:31:57,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:31:57,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:57" (1/1) ... [2020-08-22 18:31:57,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd96a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:57, skipping insertion in model container [2020-08-22 18:31:57,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:57" (1/1) ... [2020-08-22 18:31:57,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:31:57,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:31:57,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:57,723 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:31:57,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:57,868 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:31:57,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:57 WrapperNode [2020-08-22 18:31:57,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:57,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:31:57,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:31:57,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:31:57,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:57" (1/1) ... [2020-08-22 18:31:57,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:57" (1/1) ... [2020-08-22 18:31:57,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:57" (1/1) ... [2020-08-22 18:31:57,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:57" (1/1) ... [2020-08-22 18:31:57,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:57" (1/1) ... [2020-08-22 18:31:57,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:57" (1/1) ... [2020-08-22 18:31:57,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:57" (1/1) ... [2020-08-22 18:31:57,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:31:57,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:31:57,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:31:57,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:31:57,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:31:57,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:31:57,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:31:57,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-08-22 18:31:57,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-22 18:31:57,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:31:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:31:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 18:31:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-08-22 18:31:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:31:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 18:31:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:31:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:31:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:31:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 18:31:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-22 18:31:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:31:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:31:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:31:58,417 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:31:58,417 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-08-22 18:31:58,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:58 BoogieIcfgContainer [2020-08-22 18:31:58,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:31:58,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:31:58,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:31:58,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:31:58,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:31:57" (1/3) ... [2020-08-22 18:31:58,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6965a42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:58, skipping insertion in model container [2020-08-22 18:31:58,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:57" (2/3) ... [2020-08-22 18:31:58,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6965a42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:58, skipping insertion in model container [2020-08-22 18:31:58,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:58" (3/3) ... [2020-08-22 18:31:58,431 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730b.c [2020-08-22 18:31:58,441 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:31:58,448 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:31:58,459 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:31:58,479 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:31:58,480 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:31:58,480 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:31:58,480 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:31:58,480 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:31:58,480 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:31:58,481 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:31:58,481 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:31:58,499 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2020-08-22 18:31:58,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 18:31:58,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:58,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:31:58,512 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:58,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:58,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1619390018, now seen corresponding path program 1 times [2020-08-22 18:31:58,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:58,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953625272] [2020-08-22 18:31:58,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:58,576 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:31:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:58,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 18:31:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:31:58,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953625272] [2020-08-22 18:31:58,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:31:58,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:31:58,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654787283] [2020-08-22 18:31:58,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:31:58,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:31:58,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:31:58,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:31:58,797 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 4 states. [2020-08-22 18:31:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:31:59,188 INFO L93 Difference]: Finished difference Result 220 states and 261 transitions. [2020-08-22 18:31:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 18:31:59,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-08-22 18:31:59,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:31:59,202 INFO L225 Difference]: With dead ends: 220 [2020-08-22 18:31:59,203 INFO L226 Difference]: Without dead ends: 113 [2020-08-22 18:31:59,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:31:59,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-22 18:31:59,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-08-22 18:31:59,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-22 18:31:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2020-08-22 18:31:59,290 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 35 [2020-08-22 18:31:59,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:31:59,291 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2020-08-22 18:31:59,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:31:59,291 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2020-08-22 18:31:59,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-08-22 18:31:59,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:59,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:31:59,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:31:59,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:59,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:59,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1569420762, now seen corresponding path program 1 times [2020-08-22 18:31:59,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:59,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511726314] [2020-08-22 18:31:59,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:59,304 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:59,380 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:59,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:59,494 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:31:59,494 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:31:59,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:31:59,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:31:59 BoogieIcfgContainer [2020-08-22 18:31:59,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:31:59,532 INFO L168 Benchmark]: Toolchain (without parser) took 2066.55 ms. Allocated memory was 140.0 MB in the beginning and 235.9 MB in the end (delta: 95.9 MB). Free memory was 103.4 MB in the beginning and 198.0 MB in the end (delta: -94.6 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:59,533 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 18:31:59,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.43 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 103.4 MB in the beginning and 180.9 MB in the end (delta: -77.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:59,535 INFO L168 Benchmark]: Boogie Preprocessor took 47.36 ms. Allocated memory is still 203.9 MB. Free memory was 180.9 MB in the beginning and 179.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:59,535 INFO L168 Benchmark]: RCFGBuilder took 505.84 ms. Allocated memory is still 203.9 MB. Free memory was 179.0 MB in the beginning and 150.7 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:59,536 INFO L168 Benchmark]: TraceAbstraction took 1104.52 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 150.7 MB in the beginning and 198.0 MB in the end (delta: -47.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 18:31:59,541 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 403.43 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 103.4 MB in the beginning and 180.9 MB in the end (delta: -77.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.36 ms. Allocated memory is still 203.9 MB. Free memory was 180.9 MB in the beginning and 179.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 505.84 ms. Allocated memory is still 203.9 MB. Free memory was 179.0 MB in the beginning and 150.7 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1104.52 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 150.7 MB in the beginning and 198.0 MB in the end (delta: -47.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 106]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 105, overapproximation of bitwiseAnd at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 27. Possible FailurePath: [L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L101] float x = 0.0f; [L102] CALL, EXPR __ieee754_sqrtf(x) [L15] float z; [L16] __uint32_t r, hx; [L17] __int32_t ix, s, q, m, t, i; [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (ix) = gf_u.word [L24] hx = ix & 0x7fffffff [L26] COND TRUE !((hx) < 0x7f800000L) [L27] return x * x + x; [L102] RET, EXPR __ieee754_sqrtf(x) [L102] float res = __ieee754_sqrtf(x); [L105] EXPR res == 0.0f && __signbit_float(res) == 0 [L105] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L106] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 121 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 128 SDtfs, 27 SDslu, 98 SDs, 0 SdLazy, 132 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...